That ANT Table is not complex. QT has tons of legacy and supports way more features, yet, code is easier to grasp and maintain. Also, C# and WinForms, if you don't like C++:
This just seems like a comparison of how familiar you are with any of the UI libraries. None of these are simple. You're linking me thousands of lines of code, 6000+ in the WinForms example.
Yet the Ant link is just 600 lines.